5KG Coco Coir



These are Large Premium Grade 5kg coir pith blocks.

Also known as Coco Peat, Coco Coir is organic & made from the husk of the coconut.    Coco has exceptional water retention, oxygen holding and anti-fungal properties.  The compressed blocks expand 7 to 8 times in water and even when fully saturated, hold 22% air.   Coco has a PH range between 6 – 6.8 making it simply THE BEST hydroponic growing medium available.

As our Coco is used in hydroponics, it has a very low salt content.   (less than 1ms/cm (millisiemens p/cm).   The coco is sourced from inland India and washed thoroughly.    Every shipment is tested for correct salinity.

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Each 5kg block makes min 60-70 liters of premium hydroponic growing medium.

Why Choose Coco Coir?

Amazing Value

Amazing Results

  • Up to 4 times cheaper than premium potting mix! (Yep, it’s true….)
  • Can be reused after each growth phase
  • Long lasting with minimal shrinking, cracking or surface crust
  • Ships in 30 x 30 x 15 cm blocks producing up to 70 litres p/block
  • Money back guarantee for best results
  • THE top growing medium of choice for nurseries & hydroponic growers
  • Optimal PH, ranging from 6.0 – 6.8
  • 100% natural & organic
  • Compact for easy, cost effective shipping.
  • Incredible oxygen holding properties
  • Anti-fungal, reducing soil born disease
  • Millions of satisfied customers worldwide

Coco coir is the perfect hydroponic growing medium as it can hold its own weight in water and even while fully saturated holds 22% oxygen which is the best of it’s kind even beating the highly expensive rockwool (about 10% air holding capacity).  Coco is a ‘forgiving’ medium and perfect for beginners as it has plenty of buffer against over or under-watering conditions as well as temperature variance. 

Coco coir is also antifungal and can suppress and protect plants from dreaded root diseases such as pythium and phytophthora.

At Mr Stacky, we are ‘nuts’ about Coco!   We’ve tried all the mediums, and simply put, coco pith and coco pith/chip are simply THE BEST of all hydroponic mediums around. 

We’re meticulous in our sourcing and ensure that every single 5kg block you receive large, high quality with low salt levels.  Our coco is sourced from the internal areas of India far away from the coast line.   The coir is soaked in fresh water to further decrease potential salt contents. 

Why Buy Mr Stacky Coco?

Guaranteed Quality

Larger Blocks

  • Our blocks are 5kg +
  • Every shipment tested for low salinity (less than 1ms/cm)
  • Guaranteed for use in hydroponic systems
  • Best results or money back, no questions
  • Leverage the experience of large scale commercial growers
  • Our blocks are large & bulky (min 5kg)
  • Our blocks expand to min 60-70 litres
  • Some other blocks expand to 50-60 litres only

Great Qualities of Coco Coir

  • Ideal pH in the range of 6-6.7
  • Holds 8 to 9 times its weight in water
  • Lightweight and compact (easy to ship)
  • Holds up to 22% air even when saturated!
  • Exceptional drainage capability and and air porosity (plant roots love oxygen!)
  • Anti fungal and reduces soil borne disease
  • No shrinking, cracking or surface crust
  • Extremely easy to re-hydrate after being dehydrated
  • It is a 100% renewable resource
  • Completely environmentally friendly
Weight N/A
Dimensions N/A
Growing Medium

220 x 5kg Bricks (Pallet), 4 x 5kg Bricks (240-280 litres), 5kg Brick (60-70 litres)

23 reviews for 5KG Coco Coir

    March 17, 2024
    Bought it, arrived promptly, great quality, as usual. Thank you Mr Stacky!
    0 0
    Olivia Chester
    March 13, 2024
    I love growing my produce in this Coco Coir!
    Top quality; THANK YOU
    0 0
    December 18, 2023
    Good quality
    0 0
    Greg Tisdell
    October 31, 2023
    After having the original blocks from Mr Stacky, I sourced an extra one from Bunnings. It was very clear that there was a quality difference, the Bunnings one being too stringy, so I will be sticking with Mr Stacky.
    1 0
    October 16, 2023
    Great setup
    0 0
    October 4, 2023
    Brilliant product, great value. Excellent for any kind of gardening but especially pots and containers.
    0 0
    July 20, 2023
    Great product, best quality. I grow mircogreens and have tried many different coco coir. Will continue to purchase Mr Stackys!
    0 0
    July 3, 2023
    Absolutely amazing substrate. Drains well and keeps the moisture where you need it.

    Definitely going to buy more and mix it into my garden to improve the soil.
    0 0
    Mr Z
    May 7, 2022
    This is great media to grow. I tried a few Coir brands and wont use anything else from now on.
    0 0
    June 21, 2021
    Item arrived much faster than expected.
    Ordered 20kg worth, and was pleasantly surprised there wasn’t a heavy shipping fee associated.
    Would highly recommend over Amazon any day.
    0 0
    April 18, 2021
    Great product, a quarter of the brick gave me nearly a full wheelbarrow worth and plants are loving it.
    1 0
    January 21, 2021
    Incredible product. Very happy with this medium. Delivery was also super fast!
    1 0
    December 20, 2020
    Good value.
    1 0
    December 1, 2020
    Great quality, fast shipping and plants are growing well in it
    1 0
    September 11, 2020
    Really great product, and fast post. Been really happy with all the Mr Stacky products.
    0 0
    August 7, 2020
    Thanks guys. Porduct as described. Bery happy
    0 0
    July 28, 2020
    Great product.
    0 0
    Marcus Jennejohn
    July 25, 2020
    My worm farm is loving the coconut coir, good quality and quick delivery. Thank you
    0 0
    July 13, 2020
    In my experience both greens and strawberries grow well in this. Worth the effort of postage. In the second year I tried a more locally available coir and the plants were miserable. It seemed not to wick well, stained things brown, and I had problems with managing the ph.
    1 0
    Rhys Rosenberg
    July 10, 2020
    Good Quality and the weight of the blocks was 5kg.
    1 0
    Alexandr Mastakov
    July 10, 2020
    Coir was found to be a good quality and plants are growing well in it
    1 1
    July 6, 2020
    Great medium for growing vegetables
    1 0
    December 24, 2019
    These are great quality coco blocks. Very large and really nice....
    1 0
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